LONGWELL case #3- heating pump ventilation & cooling Project

LONGWELL case#3- heating pump ventilation & cooling Project

Project Case Study: High-Efficiency EC Axial fan ( Heating Pump System )for Energy**** HVAC.LLC

一. Customer information :

Client: Energy**** HVAC.LLC

Application: Heating Equipment / Heating Pump

Project Date: [2023.8]

Product Used: BLEC Brushless External Rotor Motor with EC Technology

Annual Usage: 1500 units per year

Project Overview:

Energy**** HVAC.LLC, a key player in the HVAC industry, approached us to enhance the performance of their heating pump systems. The objective was to integrate a highly efficient and durable axial fan motor that could operate reliably under extreme environmental conditions while meeting their specific technical and operational requirements.

Challenges:

The primary challenge was to develop a fan motor solution that could withstand harsh operating conditions, including wide temperature and humidity ranges, while maintaining high efficiency and reliability. The specific requirements for the fan motor included:

• Voltage: 400V (Operating voltage range: 304-456V)

• Current: 4.96A

• Power Consumption: 1694W (Maximum input power: 2400W)

• Airflow: 29373 m³/h (17278 CFM)

• Speed: 1075 RPM

• Insulation Class: F

• Protection Type: IP54

• Lifespan: 40,000 hours (at 40°C, 15-65% RH)

• Speed Control: 0-10VDC input, with an option for RS485 external control box connection

• Electrical Protections: Current limiting, over-temperature, over-current, and locked-rotor protection

• Operating Conditions: Temperature range: -30 to 60°C, Humidity: 30 to 95% RH, Altitude: <1000m

Given these stringent requirements, the motor needed to ensure long-term reliability, energy efficiency, and adaptability to both horizontal and vertical installation configurations.

OEM Solution:

We proposed the BLEC Brushless External Rotor Motor with EC Technology, an advanced motor designed to meet the demanding specifications of modern heating pump systems. This motor was selected for its exceptional efficiency, robust construction, and comprehensive protection features.

Product drawing :

P-Q cruve for this EC Motor Axial fan ( OEM DESIGN for this customer_):

Key attributes of the solution included:

• High Efficiency and Energy Savings: The EC technology in the motor allows for precise speed control, reducing energy consumption and enhancing overall system efficiency. The motor’s power consumption of 1694W, with a maximum input power of 2400W, ensures optimal performance without unnecessary energy waste.
• Robust and Durable Design: With an insulation class of F and IP54 protection, the motor is built to withstand harsh environments, ensuring reliable operation even under extreme conditions.
• Extended Lifespan: The motor is engineered to last, with a lifespan of 40,000 hours at 40°C, reducing the need for frequent replacements and lowering maintenance costs.
• Advanced Protection Features: The motor includes multiple layers of electrical protection, such as current limiting, over-temperature, and locked-rotor protection, safeguarding the system from potential operational failures.

Results:

The integration of the BLEC Brushless External Rotor Motor into Energy**** HVAC.LLC’s heating pump systems has resulted in:

• Enhanced System Reliability: The motor’s robust design and comprehensive protection features have significantly reduced system downtime, improving overall reliability.
• Energy Efficiency Gains: The precise speed control provided by EC technology has led to substantial energy savings, aligning with Energy**** HVAC.LLC’s commitment to sustainability.
• Adaptability to Harsh Conditions: The motor’s ability to operate within a wide range of temperatures and humidity levels has ensured consistent performance across various environmental conditions.

Energy**** HVAC.LLC has expressed high satisfaction with the motor’s performance and has committed to continuing its use in future heating pump systems, reinforcing our strong partnership.